UserRoleConverter.java

/*
 * Copyright (C) 2010 Interactive Media Management
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package dk.i2m.converge.jsf.converters;

import dk.i2m.converge.core.security.UserRole;
import dk.i2m.converge.core.DataNotFoundException;
import dk.i2m.converge.ejb.facades.UserFacadeLocal;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;

/**
 * JSF Converter for {@link UserRole}s.
 *
 * @author Allan Lykke Christensen
 */
public class UserRoleConverter implements Converter {

    private static final Logger LOG = Logger.getLogger(UserRoleConverter.class.getName());

    private UserFacadeLocal userFacade;

    /**
     * Creates a new instance of {@link UserRoleConverter}.
     * 
     * @param userFacade
     *          USer facade used for looking up user roles
     */
    public UserRoleConverter(UserFacadeLocal userFacade) {
        this.userFacade = userFacade;
    }

    @Override
    public Object getAsObject(FacesContext ctx, UIComponent component, String value) {
        try {
            return userFacade.findUserRoleById(Long.valueOf(value));
        } catch (DataNotFoundException ex) {
            LOG.log(Level.WARNING, "No user role matching [{0}]", value);
            return null;
        }
    }

    @Override
    public String getAsString(FacesContext ctx, UIComponent component,
            Object value) {
        if (value == null) {
            return "";
        } else {
            UserRole role = (UserRole) value;
            return String.valueOf(role.getId());
        }
    }
}